1970s Shanghai 1120 | Building LogoShanghais 1120 was the factorys first fully independently designed movement, introduced around 1966 as a modernization of the earlier A581 and produced in large numbers as a core caliber. This movement marked a significant milestone in Chinese watchmaking by combining technical innovation with stylistic refinement, making the Shanghai 1120 a notable piece of horological history. Key Features of Shanghai 1120: First in house 1120 movement from Shanghai